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					<h1 class="title">ASDisplayNode(UIViewBridge) Category Reference</h1>

					
					<div class="section section-specification"><table cellspacing="0"><tbody>
						<tr>
	<th>Declared in</th>
	<td>ASDisplayNode.h</td>
</tr>
						</tbody></table></div>
					

                    
					
					<div class="section section-overview">
						<a title="Overview" name="overview"></a>
						<h2 class="subtitle subtitle-overview">Overview</h2>
						<h2>UIView bridge</h2>

<p>ASDisplayNode provides thread-safe access to most of UIView and CALayer properties and methods, traditionally unsafe.</p>

<p>Using them will not cause the actual view/layer to be created, and will be applied when it is created (when the view
or layer property is accessed).</p>

<ul>
<li>NOTE: After the view or layer is created, the properties pass through to the view or layer directly and must be called on the main thread.</li>
</ul>


<p>See UIView and CALayer for documentation on these common properties.</p>
					</div>
					
					

					
					
					<div class="section section-tasks">
						<a title="Tasks" name="tasks"></a>
						

						
						

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							<div class="section-method">
	<a name="//api/name/setNeedsDisplay" title="setNeedsDisplay"></a>
	<h3 class="method-title"><code><a href="#//api/name/setNeedsDisplay">&ndash;&nbsp;setNeedsDisplay</a></code>
</h3>

	<div class="method-info">
		<div class="pointy-thing"></div>

		<div class="method-info-container">
			
			
			<div class="method-subsection brief-description">
				<p>Marks the view as needing display. Convenience for use whether the view / layer is loaded or not. Safe to call from a background thread.</p>
			</div>
			
		    

			<div class="method-subsection method-declaration"><code>- (void)setNeedsDisplay</code></div>

		    
			

			

			

			

			

			

			
			<div class="method-subsection declared-in-section">
				<h4 class="method-subtitle">Declared In</h4>
				<p><code class="declared-in-ref">ASDisplayNode.h</code></p>
			</div>
			
			
		</div>
	</div>
</div><div class="section-method">
	<a name="//api/name/setNeedsLayout" title="setNeedsLayout"></a>
	<h3 class="method-title"><code><a href="#//api/name/setNeedsLayout">&ndash;&nbsp;setNeedsLayout</a></code>
</h3>

	<div class="method-info">
		<div class="pointy-thing"></div>

		<div class="method-info-container">
			
			
			<div class="method-subsection brief-description">
				<p>Marks the node as needing layout. Convenience for use whether the view / layer is loaded or not. Safe to call from a background thread.</p>
			</div>
			
		    

			<div class="method-subsection method-declaration"><code>- (void)setNeedsLayout</code></div>

		    
			

			

			

			
			<div class="method-subsection discussion-section">
				<h4 class="method-subtitle">Discussion</h4>
				<p>If this node was measured, calling this method triggers an internal relayout: the calculated layout is invalidated,
and the supernode is notified or (if this node is the root one) a full measurement pass is executed using the old constrained size.</p>

<p>Note: ASCellNode has special behavior in that calling this method will automatically notify
the containing ASTableView / ASCollectionView that the cell should be resized, if necessary.</p>
			</div>
			

			

			

			
			<div class="method-subsection declared-in-section">
				<h4 class="method-subtitle">Declared In</h4>
				<p><code class="declared-in-ref">ASDisplayNode.h</code></p>
			</div>
			
			
		</div>
	</div>
</div><div class="section-method">
	<a name="//api/name/backgroundColor" title="backgroundColor"></a>
	<h3 class="method-title"><code><a href="#//api/name/backgroundColor">&nbsp;&nbsp;backgroundColor</a></code>
</h3>

	<div class="method-info">
		<div class="pointy-thing"></div>

		<div class="method-info-container">
			
			
			<div class="method-subsection brief-description">
				<p>The node view&rsquo;s background color.</p>
			</div>
			
		    

			<div class="method-subsection method-declaration"><code>@property (nonatomic, strong, nullable) UIColor *backgroundColor</code></div>

		    
			

			

			

			
			<div class="method-subsection discussion-section">
				<h4 class="method-subtitle">Discussion</h4>
				<p>In contrast to UIView, setting a transparent color will not set opaque = NO.
This only affects nodes that implement +drawRect like ASTextNode.</p>
			</div>
			

			

			

			
			<div class="method-subsection declared-in-section">
				<h4 class="method-subtitle">Declared In</h4>
				<p><code class="declared-in-ref">ASDisplayNode.h</code></p>
			</div>
			
			
		</div>
	</div>
</div><div class="section-method">
	<a name="//api/name/contentMode" title="contentMode"></a>
	<h3 class="method-title"><code><a href="#//api/name/contentMode">&nbsp;&nbsp;contentMode</a></code>
</h3>

	<div class="method-info">
		<div class="pointy-thing"></div>

		<div class="method-info-container">
			
			
			<div class="method-subsection brief-description">
				<p>A flag used to determine how a node lays out its content when its bounds change.</p>
			</div>
			
		    

			<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) UIViewContentMode contentMode</code></div>

		    
			

			

			

			
			<div class="method-subsection discussion-section">
				<h4 class="method-subtitle">Discussion</h4>
				<p>This is like UIView&rsquo;s contentMode property, but better. We do our own mapping to layer.contentsGravity in
_ASDisplayView. You can set needsDisplayOnBoundsChange independently.
Thus, UIViewContentModeRedraw is not allowed; use needsDisplayOnBoundsChange = YES instead, and pick an appropriate
contentMode for your content while it&rsquo;s being re-rendered.</p>
			</div>
			

			

			

			
			<div class="method-subsection declared-in-section">
				<h4 class="method-subtitle">Declared In</h4>
				<p><code class="declared-in-ref">ASDisplayNode.h</code></p>
			</div>
			
			
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